Scientific name -Kingdom- Fungi, Phylum- Ascomycota Class- Ascomycetes Order- Saccharomycetaler, Family- Saccharomycetaceae, Genus- Saccharomyces, Species- Cervisiae Description - Yeast is a unicellular organism that lacks chloroplasts. They are so small that it can"t be seen by the naked eye and they are so small that it would take 4000 of them lined up side by side to measure an inch. Habitat - Yeast lives on and is nourished by dead or living plant or animal matter. The ideal conditions of yeast is high humidity and temperature, plus lots of food. In bad conditions though the yeast produces a second cell...
things. It may break away from the parent or it may stay attached to form a chain or a cluster. Budding is very quick. It takes about 20 minutes to produce new yeast.

Importance - Yeast is used in many different types of commercial uses. Some of them are in banking to get breads and cakes to rise, in beer production in Germany, and wine production.

Wine producers don"t use wild yeast because they have some unfavorable traits. So they kill off the wild yeast and use yeast that have been domesticated to the needs of the production process.